Inkstand.



H. BAROZEWSKI.

INKSTAND APPLICATION FILED DEG.23, 1912.

Patented May 19, 1914,

I I I I l/ To. alhuhom it may concern:

i UNITED STATES. PATENT ()FFICE.

- HEINRICH BARCZEWSKI, 0F DA NZIG-LANGFUHR, GERMANY.

' INKSTAND.

Specification of Letters Patent. Patented May 19, 1914,

i z y p Applicationfi1tdDeceinber23, 1912. Serial No. 738,318.

Be it known that I, HEINRICH Banpzuw- SKI, citizen of the Empire ofGermany,

residing at No. 27 St. lvlichaelsweg,Danzig- .Langfuhr, KingdomofPrussia, Empire of Germany, have inventednew and 'use iul improvementsin Inkstands Provided with'lnk- Reservoirs and Dippingells, of which thefollowing is a specification. y

This invention relates toan inkstand having an ink reservoir and dippingwell, and to that classin which the ink reservoir is furnished with aseparate air supply tube which projects into the upper air-space of thereservoir. In all inkstands of this class as heretofore usuallyconstructed, the dippin well is in direct communication by way of theink outlet with the reservoir, t 1e result being that ink which may havebecome thick and muddy in the dipping well stands to pass into the inkreservoir and spoil all the ink contained therein.

The object of this invention is to avoid these defects. lVith thisobject a comparatively small inkoutlet orifice is provided above thelower end of the air supply tube and extending above the normal level ofthe ink in the reservoir, the arrangement being preferably such that theair supply tube and the ink passage pass through a screw-threaded socketin the ink reservoir into which the dipping well is adjustably screwed,so that by raising or lowering the position of the ink reservoir inrelation to the dipping well it is possible to vary the level of the inkin the well.

The accompanying drawings, Figures 1 and 2, are illustrative of twoconstructional forms of an inkstand in accordance with this invention.

In the drawings a is the ink reservoir, 6 is the dipping well, 0 is thepassage through which ink flows from the reservoir into the dippingwell, 03 is the outlet at the lower end of this passage, 6 is the tubethrough which air is supplied to the reservoir, while f is the highestpoint of the lower end of the air supply tube. l/Vhen the level of theink in the dipping well falls, air passes into the air supply tube withthe effect that ink is in accordance with the present invention causedto flow through the outlet at of the passage 0; this outlet beingsituated above the air inlet of the air supply tube 6 by which the levelof the ink in the dipping well 1s determined.

' The action of the device is asfollows: At ter the ink-stand has beenfilled and the dipping well has been put in position, the

ink-stand is placed upri htas shown. The

.voir being cut off. It is of course understood t hat the outletaperture d of the passage c is too narrow to allow air to enter and inkto flow out simultaneously. There is, however, no risk of this, providedthe openmg is of not more than from two to three millimeters bore. Assoon as the ink in the dipping well has been used up to such an extentas to expose the aperture 7 of the air supplytube a, air enters the inkreservoir with the effect that the ink is caused to flow from it untilthe air inlet aperture is again covered. The aperture d is under normalconditions always above the level of the ink in the dipping well, and inconsequence it is not possible for the ink in the well to become mixedwith that in the reservoir. The air supply tube a is preferably enlargedin the usual manner to an extent suflicient to prevent trouble fromcapillary attraction.

In the construction illustrated in Fig. 2, the lower portion of the inkreservoir is furnished with a screw-threaded socket g which isadjustably screwed into the rear part of the neck of the dipping wellI). In this case the ink reservoir is preferably in the form of aninverted bottle, the screw-threaded mouth of which is closed by means ofa stopper z' embracing the air supply tube a and the ink outlet pipe 0.The ink outlet pipe 0 extends from immediately above the stopper i toabove the mouth f of the air supply tube 6, said mouth beingfunnel-shaped. The ink reservoir is by preference obliquely andrearwardly inclined, so that the opening of the airsupply tube is closeto the point where the pen is dipped into the well, thus decreasing asmuch as possible the surface sub ect to evaporation. The ink reservoirmay, however, in some cases be arranged in a central position.

By rotating the ink reservoir the latter can be screwed into the neck hof the well to a greater or less extent to adjust the level of theaperture f of the air supply tuber and thereby also adjust the level ofthe ink in the well as desired. When the ink reservoir is screwedhigher, the level is modified at once, as ink will immediately begin toflow out and will continue to do so until the ink in the well againcovers the opening f of the air supply tube. Then the reservoir isscrewed deeper into the neck of the well, the lower level therein isproduced gradually by the ink being used up, as ink can only flow fromthe reservoir into the well when the level of the ink in the well hassunk below the aperture f of the air supply tube. As the opening of theair supply tube is located in a plane which is parallelto the bottomsurface of the bottle neck, it is clear that the supply of air to thereservoir and consequently the outflow of ink therefrom can be entirelyprevented by screwing the reservoir down until the opening of the airsupply tube is in contact with the bottom of the bottle neck.

In order as far as possible to prevent the ink in the well from becomingthick there is provided a cover Z, while the arrangement is moreoversuch that the surface m of the ink in the well as well as the amount ofink therein are as small as possible. This is efi'ected by making thewell only large enough to enable the pen to be conveniently dipped intoit.

To fill the ink stand the ink reservoir is turned upside down, the wellis removed,

and the ink poured in through the neck of the air supply tube. The lowerportion is then again put in position and the inkstand reversed. In theconstructional forms illustrated in the drawing the dipping well forms aseparate part: if desired, however, the arrangement may be such that thewell forms a portion of a solid foundation for the ink receptacle, inwhich case the two pipes of the ink reservoir project only into the wellof the base.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is:

In an ink-stand, in combination, an ink reservoir, a dipping wellpositioned below and communicating with a passage of said reservoir andan air conduit communicating with said reservoir and sald well, thelower end of said conduit being positioned below I the lower end of saidpassage.

In testimony whereof I afiix my signature in presence of two witnesses.

HEINRICH BAROZEWSKI.

Vvitnesses ERNsT STRUMSKI, MARTHA FRIso.

